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Finding the Fourth Proportional to 230,231.94, 317,715.73 and 128,265.81

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Solution

The fourth proportional to 230,231.94, 317,715.73 and 128,265.81 is: 177,004.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,231.94 : 317,715.73 = 128,265.81 : x
  2. Step 2: Convert to fraction form
    230,231.94/317,715.73 = 128,265.81/x
  3. Step 3: Cross multiply
    230,231.94x = 317,715.73 × 128,265.81
  4. Step 4: Simplify right side
    230,231.94x = 40,752,065,458.19
  5. Step 5: Solve for x
    x = 40,752,065,458.19/230,231.94
  6. Step 6: Final answer
    x = 177,004.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.